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WO2016032130A1 - Système de calcul de charge de section, pour la distribution d'énergie, en fonction de la quantité d'utilisation d'énergie d'infrastructure de comptage avancée - Google Patents

Système de calcul de charge de section, pour la distribution d'énergie, en fonction de la quantité d'utilisation d'énergie d'infrastructure de comptage avancée Download PDF

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Publication number
WO2016032130A1
WO2016032130A1 PCT/KR2015/007736 KR2015007736W WO2016032130A1 WO 2016032130 A1 WO2016032130 A1 WO 2016032130A1 KR 2015007736 W KR2015007736 W KR 2015007736W WO 2016032130 A1 WO2016032130 A1 WO 2016032130A1
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WIPO (PCT)
Prior art keywords
load
section
current
ami
transformer
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Ceased
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PCT/KR2015/007736
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English (en)
Korean (ko)
Inventor
신진호
노재구
김준성
최승환
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Korea Electric Power Corp
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Korea Electric Power Corp
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Publication of WO2016032130A1 publication Critical patent/WO2016032130A1/fr
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
    • H02J3/48—Controlling the sharing of the in-phase component
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P7/00—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices
    • F02P7/10—Drives of distributors or of circuit-makers or -breakers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B7/00—Enclosed substations, e.g. compact substations
    • H02B7/06—Distribution substations, e.g. for urban network
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00—Climate change mitigation technologies for sector-wide applications
    • Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier

Definitions

  • the present invention relates to a distribution section load calculation system based on AMI power usage, and more particularly, to measurement information of SCADA (Supervisory Control And Data Acquisition) and DAS (Distributive on Automation System).
  • SCADA Supervisory Control And Data Acquisition
  • DAS Distributive on Automation System
  • the section load of the distribution system In general, the section load of the distribution system, fault handling, load switching such as power outages, system optimization and reconfiguration, protection coordination review and correction, linkage calculation between substations, loss and voltage drop improvement, and distribution investment planning, etc. As the basis for this, it is very important for system operation and planning.
  • the lower sections conventionally calculate the section load after uniformly allocating the same load considering only the positive (that is, the horizontal distance of the designated section of the cable line), and thus the calculated section load is too different from the actual site. There is a problem that the reliability of the loss, voltage drop, and system reconstruction using the section load are unreliable.
  • the conventional section load calculation of the DAS is based on the power supply side breaker current and the load side of the load side breaker based on the part of the circuit breaker of the distribution line that measures the current on an hourly basis. All sections between the automated switchgear sections are redistributed in positive contrast.
  • the switch current at this time is based on the last five days of data on weekdays, the weekend is based on the four weeks immediately before the Saturday / Sunday, section intervals are calculated using the third data of the large order by time zone.
  • a 35 (A) is allocated to the intervals between the automatic switchgear (eg 18 intervals) by the ratio of each positive.
  • some of the sections may be a section without the low-voltage transformer, the high-voltage consumer may use most of the power, the conventional automation system was used to distribute the section load only positive.
  • the division loads distributed as described above are used to quickly recover the electrostatic load except the failure section in case of failure of the distribution line.
  • the load of the electrostatic section load and the line load of the connecting line should be 14,000 kW or less, which is an emergency operating condition.
  • the transfer plan is established so that the connecting line can operate under emergency operation conditions.
  • the section load is also used in applications such as distribution system optimization and protection coordination of the distribution automation system.
  • the distribution system optimization function calculates voltage drop, load, and loss to always move the open point, which is better than the current system. Finding a system
  • the rather high section loads are positively distributed and used for calculation as described above, the load of the system is greatly different from the loads seen in the conventional automation system, resulting in a problem of inadequate reliability from the operator's point of view regarding the result of the application. do.
  • the voltage drop or power loss is calculated by assuming all loads in the section as the average load. All are not distributed on average.
  • the present invention was created to solve the above problems, and the characteristics of the power consumption of AMI (Advanced Metering Infrastructure), which is the actual load of the system, as well as the measurement information of the substation automation system (SCADA) and the distribution automation system (DAS). It is an object of the present invention to provide a distribution section load calculation system that can more accurately calculate section loads to manual switchgear and branch sections.
  • AMI Advanced Metering Infrastructure
  • SCADA substation automation system
  • DAS distribution automation system
  • Distribution distribution load calculation system based on the AMI power consumption according to an aspect of the present invention, by subdividing the current of the first specific time unit measured in the second specific time unit measured in the automatic switchgear, eliminating errors, distributed power supply and loop
  • An automatic switchgear section current correcting unit configured to correct current in the automatic switchgear section by performing a tidal current calculation reflecting a system characteristic of a driving system;
  • the transformer current which is the sum of the high-voltage customer load and the low-voltage customer load, is substituted into the effective / reactive power value of each section by using the corrected current of the automatic switch section, and the AMI (Advanced Metering Infrastructure) power consumption of each section is used.
  • a lower section customer load processing unit for calculating a load area for the load; An algae calculation unit performing algae calculation based on a load area calculation result for the AMI power consumption of the lower section; And a section load generation unit for classifying the use of the load according to the classification criteria of the section load based on the algal calculation result and generating a section load suitable for each use.
  • the automatic switchgear section current correction unit the circuit breaker measured in the SCADA (Supervisory Control And Data Acquisition), excluding the fault current generated in the substation and distribution system and the load current due to the work outage during the section load calculation process ( CB) Calculate the load deviation of the measurement current of the automatic switchgear (GA) with the same load deviation as the current pattern, subdivide the load in the automatic switchgear section by the second specific time unit, and then load-side load current rather than the power-side load current in each section.
  • SCADA Supervisory Control And Data Acquisition
  • the lower section customer load processing unit searches for the high-voltage customer and the transformer in the lower section, and calculates the section load by substituting the position and the metering information of the high-voltage customer as the effective / invalid power value in the lower section.
  • the load monitoring data and position are substituted into the corresponding lower section as the effective / reactive power value. It is characterized by calculating the load area.
  • the lower section customer load processing unit performs automatic meter reading (AMR) / Advanced Metering Infrastructure (AMI) for all low voltage customers below the transformer and adds the meter reading information when the meter reading information exists.
  • AMR automatic meter reading
  • AMI Advanced Metering Infrastructure
  • the load area of each section is calculated by substituting the transformer position and the load information into an effective / reactive power value in a corresponding lower section.
  • the lower section customer load processing unit except in the case where the transformer is subjected to load monitoring and the AMR / AMI for all low-voltage customers below the transformer and the meter information is present except
  • the load area of each section is calculated by substituting the transformer pull composite load and the transformer position information as the effective / reactive power values in the corresponding lower section.
  • the use of the section load when the maximum value of the section in the unit of D / L (distribution line) is required, the maximum load of the peripheral pressure transformer / substation unit CB is required, and The case where the maximum load is required is characterized by the classification criteria.
  • the section load generation unit by querying the section load of the result of calculating the tidal current by the third predetermined time unit to generate the section load in a predetermined period unit according to the classification criteria for each application of the section load, D
  • D In the case of / L (distribution line) maximum load reference, calculate the maximum value of the section in which the voltage drop and overvoltage occur for the purpose of improving the voltage drop and overvoltage, to generate the other section load at that time, and to improve the loss. If the purpose is to calculate the maximum loss and generate the corresponding time and section load, and if the purpose to improve the power factor is characterized by generating the corresponding time and section load by calculating the minimum power factor.
  • the section load generation unit if the classification criteria for each use of the section load is the peripheral pressure transformer or substation maximum load criteria, after calculating the maximum load time for each of the peripheral pressure transformer or substation, and then for each peripheral pressure or substation It is characterized in that the supply section is calculated, all the section loads are generated on the basis of the time point, and thereafter, the section loads are additionally generated.
  • the section load generation unit when the classification criteria for each use of the section load is the maximum load criterion for the link line group unit CB, after calculating the maximum load time point for each link line group unit CB, the one of the CB It is characterized by generating all the section loads based on the maximum load time point by calculating the supply section for each of the connected lines based on the maximum load time point, and additionally generating the section load of the missing section.
  • the present invention enables the calculation of the section loads to the manual switchgear and the branch section more accurately by using the AMI power usage which is the actual load of the system, and the intensive load and distribution load considering the position and size of the AMI power usage in the system. By reflecting the characteristics, it is possible to calculate the flow, voltage drop, and loss of the load closer to the site situation.
  • FIG. 1 is an exemplary view for explaining a section configuration and a section load calculation method of a conventional distribution system.
  • Figure 2 is an exemplary view showing a schematic configuration of a distribution section load calculation system based on AMI power usage according to an embodiment of the present invention.
  • FIG. 3 is a table showing details of load data managed by a load data management unit in FIG.
  • FIG. 4 is a flowchart illustrating an operation process of the automatic switchgear section current corrector of FIG. 2.
  • FIG. 5 is an exemplary view showing a SCADA measurement load pattern for explaining the section load error in accordance with an embodiment of the present invention.
  • FIG. 6 is an exemplary view showing a measured value table and a SCADA current graph of a distribution automation system for explaining a conventional problem in connection with the present embodiment.
  • FIG. 7 is an exemplary view illustrating a result of subdividing a load current in FIG. 6.
  • FIG. 8 is a flowchart illustrating a process in which a lower section customer load processing unit processes the AMI power usage of the lower section in FIG. 2.
  • FIG 9 is an exemplary view showing a load distribution form of the lower section used in the distribution automation system in accordance with the present embodiment.
  • FIG. 10 is an exemplary diagram for comparing and comparing a conventional load distribution method and a load distribution method according to an embodiment of the present invention.
  • FIG. 11 is a table comparing and comparing the results of calculating voltage drop and loss based on the system and load shown in FIG. 10 according to the conventional method and the method according to the present embodiment.
  • FIG. 12 is a flowchart for explaining a tidal current calculation method using the Newton Labson algorithm of the tidal current calculation unit in FIG. 2.
  • FIG. 13 is a table for classifying section loads and their respective uses for generating section loads in the section load generation unit for each facility and system in FIG. 2.
  • FIG. 14 is a flowchart illustrating a method of generating section loads on a monthly basis in accordance with the classification criteria for each use in the section load generation unit for each facility and system in FIG. 2.
  • FIG. 2 is an exemplary view showing a schematic configuration of a distribution section load calculation system based on AMI power usage according to an embodiment of the present invention.
  • the distribution section load calculation system based on the AMI power usage includes a load data management unit 110, an automatic switchgear section current corrector 120, and a lower section customer load processor 130. , A bird calculation unit 140, and section load generation unit 150 for each facility and system.
  • the load data management unit 110 manages a distribution system and load information (ie, load data) (see FIG. 3).
  • FIG. 3 is a table showing details of load data managed by the load data management unit in FIG. 2.
  • the load data includes substation measurement information, distribution values of a distribution system and an automatic switchgear, monthly meter reading information of a low voltage customer, and a distribution transformer pull composite load calculated by a correlation coefficient for a lamp, and a measurement of a transformer load monitoring system.
  • Information eg, SCADA, DAS, NDIS, transformer load monitoring system, AMI).
  • the automatic switch section current corrector 120 subdivides the current of the first specific time (eg 1 hour) unit measured by the automatic switchgear by the second specific time (eg 5 minutes) unit to correct an error (or error). It performs the function of compensating the current in the automatic switchgear section by removing the current and calculating the algae reflecting the system characteristics of the distributed power supply and loop operation system.
  • FIG. 4 is a flowchart illustrating an operation process of the automatic switchgear section current corrector of FIG. 2.
  • the automatic switchgear section current corrector 120 is an exception since the fault current generated in the substation and the distribution system and the load current (that is, fault / interruption current) due to a work interruption (interruption) are exceptional. Excluded (or removed) in the load calculation process (S101).
  • the measurement cycle of the automatic switchgear of the DAS is 1 hour unit. Therefore, in the present embodiment, when trying to calculate the section load at different time intervals (eg, 5 minutes, 15 minutes, etc.), an error may occur as much (see FIG. 5). Therefore, it is necessary to correct the current in the same time zone using the SCADA data in order to reduce the section load error caused by the difference in the measurement time as described above.
  • FIG. 5 is an exemplary view showing a SCADA measurement load pattern for explaining the section load error in accordance with an embodiment of the present invention.
  • Figure 5 (a) is an exemplary view showing the load pattern of the SCADA measurement current of 5 minutes period during the day
  • Figure 5 (b) is a data 12 for one hour from 8 pm to 9 pm in (a) It is an exemplary view showing only the dog enlarged.
  • the measurement of the switchgear of the distribution automation system is not measured at the same time, but is determined by the communication infrastructure, and thus there is a problem that a large difference occurs in the switchgear measurement time within 1 hour (see FIG. 6). .
  • FIG. 6 is an exemplary view showing a measured value table and a SCADA current graph of a DAS for explaining a conventional problem in connection with the present embodiment.
  • the time and measured values measured by the DAS are about 10 minutes in each section (eg, CB section and GA section). It can be seen that there is a difference (actually, there is a line with a larger measurement time difference than this case), and referring to the SCADA current graph shown in FIG. 6 (b), even during the measurement time difference (about 10 minutes) It can be seen that the SCADA current varies greatly.
  • the above problems may result in a case where the load-side switch current is larger than the power-side switch current even in the dendritic system, and accordingly, a conventional distribution automation system (In some cases, the load side breaker current is larger than the power side breaker current.
  • a load side load current (eg, 195) may be larger than a load side load current (eg, 180), such as 2GA. It can be seen that this is not actually a larger load-side current but a problem due to the difference in measurement time.
  • GA GasSwitch Auto
  • CB Circuit Breaker
  • the load current is affected by the section load, but generally has the same pattern. Therefore, in the present embodiment, the load deviation of the GA (automatic switchgear) measurement current is calculated using the same load deviation as the CB (breaker) current pattern measured by the SCADA (S102), and the load of the automatic switchgear section is determined in a second specific time unit (eg (5 minutes), the result of the segmented load pattern of the automatic switchgear section as shown in FIG. 7 can be obtained.
  • the GA automatic switchgear
  • FIG. 7 is an exemplary view showing a result of subdividing a load current in FIG. 6.
  • the switchgear of the conventional automation system does not provide directional information except for the bidirectional protection device. Therefore, in a situation where distributed power sources such as renewable energy are increasing, the current value of a switch with no direction indicates whether the load current is provided by an electricity supplier (for example, KEPCO) or distributed power. I can't.
  • KEPCO electricity supplier
  • the algae calculation is performed for the purpose of current correction only in the automatic switchgear section in order to reflect the algae direction and the loop operation system of the distributed power supply system.
  • the algae calculation is performed using the Newton Labson algorithm as an input value of the current in the automatic switchgear section (S106).
  • the automatic switchgear correction current may be stored in a third specific time unit (for example, 15 minutes).
  • a ratio for comparing with the ratio of the sum of the section loads based on the CB (breaker) current (that is, a reference ratio) ) Is set to 10% or less considering the divergence degree and error rate.
  • the lower section customer load processor 130 substitutes a transformer load that is the sum of the high-voltage customer load and the low-voltage customer load in the lower section (that is, substitutes the effective / reactive power value of each section). (See Figure 8).
  • the distribution system is quite complicated even if only the section between the automated switch and the other switch.
  • the low-voltage transformer passes without any one, such as a trunk line, and a section in which only a low-voltage transformer exists, or there may be a high-pressure acceptor in the section between the automatic switch, and also a high pressure and a low pressure. There may also be this mixed section.
  • the section load is calculated using the metering information of the high voltage customer, the load monitoring data of the low voltage transformer, the low pressure AMI metering information, or the transformer pull load information in the section.
  • FIG. 8 is a flowchart illustrating a process in which the lower section customer load processor processes the AMI power usage of the lower section.
  • the lower section customer load processing unit 130 searches for a high voltage customer and a transformer in units of lower sections (S201).
  • the metering information is an amount of active power and reactive power in units of a third specific time (for example, 15 minutes)
  • the metering information is multiplied by 4 to convert the metering information into active power and reactive power, and then 60 to remove time components. Divide by minutes.
  • the lower section customer load processing unit 130 distinguishes the transformer applied load in order to substitute the load of the low pressure customer (S203).
  • the lower section customer load processing unit 130 in the case of the transformer that is performing the transformer load monitoring (S204), the load monitoring data and the position of each section is valid / invalid Substitute the power value (S205).
  • the transformer load information is generated by summing the meter reading information (that is, Next, the transformer position and load information are substituted into the effective / reactive power values of the respective sections (S208).
  • AMR Automatic Meter Reading
  • AMI Advanced Metering Infrastructure
  • the transformer pull composite load and the transformer position information are substituted as the effective / reactive power value of each section (S210).
  • the load area is calculated to calculate the load of the lower section in consideration of the AMI power usage characteristics as described above (S211).
  • the present embodiment uses a high-voltage customer and a low-voltage transformer position information in the lower section to determine whether the load is distributed or concentrated, and analyze the system in a highly accurate load (LP: active power, LQ: reactive power). Can be calculated.
  • LP active power
  • LQ reactive power
  • FIG 9 is an exemplary view showing a load distribution form of the lower section used in the distribution automation system in accordance with the present embodiment.
  • FIG. 9 shows a distribution load form which means that the load is equally used in the lower section
  • FIG. 9 (b) shows the end concentration section load form
  • FIG. 9 (c) shows the distribution load. And section load with mixed end load.
  • FIG. 10 is an exemplary diagram for comparing and comparing a conventional load distribution method with a load distribution method according to an embodiment of the present invention.
  • sections such as 1, 4, and 6 have uniform load distribution regardless of the actual load position and size. There is a problem in that the load is uniformly performed even in a section without an actual load, such as sections 2, 3, and 5, to calculate that there is a load.
  • load distribution is performed only in the section with the actual load. That is, since section 1 is the terminal concentrated load, section 1 calculates the load area at 11A, section 4 is the section where the concentrated load and the distribution load are mixed, and section 6 is the distribution load section with the low voltage transformer only. Calculate the load area reflecting the location and size of the load. And 2, 3, 5 section is no load section, so do not calculate the load area.
  • the load area may be calculated by constructing a matrix as follows.
  • the method for calculating the load area is an example described method.
  • the conventional method is 50%, and the method according to the present embodiment is 100%. That is, in the conventional method, the load area of all sections becomes 50%, but the method (improved method) according to the present embodiment calculates the actual load area.
  • each line type is ACSR-95mm
  • neutral wire is ACSR-58mm
  • impedance Z 0.33195 ⁇
  • resistance R 0.30415 ⁇ .
  • FIG. 11 is a table illustrating comparison of the results of calculating the voltage drop and the loss based on the system and the load shown in FIG. 10 by the conventional method and the method according to the present embodiment.
  • the voltage drop was calculated to be 379V in the conventional method (the existing method) and 289V in the method (the improvement method) according to the present embodiment. Because the concentrated load and the no-load section has a small voltage drop, the method according to the present embodiment is calculated small.
  • the difference was nearly twice that of the conventional method (existing method) of 80,617W, and the present method (improving method) of 43,508W. This is because the loss is increased in the case of a load concentrated at the end of the distribution line.
  • the line illustrated in FIG. 10 has a large AMI power consumption and a no-load section in front of the section, and thus the loss in the scheme according to the present embodiment. The calculation result is small.
  • the tidal current calculation unit 140 performs tidal current calculation based on the load area calculation result for the AMI power usage of the lower section.
  • the algal calculation may be calculated using the Newton Labson algorithm, but is not limited to the Newton Labson algorithm.
  • FIG. 12 is a flowchart for explaining a bird calculating method using the Newton Labson algorithm of the bird calculating unit in FIG. 2.
  • the tidal current calculation unit 140 receives system data (eg, section configuration, section length, line information, load data, etc.) of a system to calculate an admittance matrix Y (S301).
  • system data eg, section configuration, section length, line information, load data, etc.
  • the voltage of each bus which can be received from SCADA
  • the initial value of the iteration calculation the iteration can be infinite loop in some cases because the bird calculation has to be performed until the current converges)
  • Is set S302
  • the tidal current calculator 140 outputs a result value (bus voltage and line tidal current) (S305). However, if the maximum effective / reactive power is not below the end limit (No in S304), the tidal current calculation unit 140 calculates the change amount of the bus voltage through the calculation using the Jacobian matrix (S306) (S307). Update (S308).
  • a result value (a bus voltage and a line tide calculation result for each phase) is output (S305).
  • the number of iterations (h) is less than the maximum number of iterations, go back to step S303 to the effective / reactive power of each section ( ) Is checked (judged) for divergence (mismatch).
  • the section load generation unit 150 for each facility and system divides the classification criteria and the use of the section loads, and generates (ie, calculates) section loads suitable for each application (see FIG. 13).
  • FIG. 13 is a table for classifying section loads and their respective uses for generating section loads in the section load generation unit for each facility and system.
  • the use is a case where a maximum value of a section is required in units of D / L (distribution lines), a case where a maximum load of a peripheral pressure / station unit CB (breaker) is required, and The case where the maximum load is required is classified based on the classification criteria.
  • FIG. 14 is a flowchart illustrating a method of generating section loads on a monthly basis in accordance with the classification criteria for each use in the section load generation unit for each facility and system in FIG. 2.
  • the section load generation unit 150 for each facility and the system inquires section loads of the algae calculation result in units of 15 minutes (S401) and sections on a monthly basis according to the four usage classification criteria for each use.
  • a load is generated (that is, calculated) (S402).
  • the maximum value of the section in which the voltage drop and the overvoltage are generated is calculated for the purpose of improving the voltage drop or the overvoltage, thereby generating another section load at that time ( That is, calculating (S404), if the purpose is to improve the loss to calculate the maximum loss value to generate the time and the section load (that is, calculate) (S405), if the purpose to improve the power factor, calculate the minimum power factor By generating (ie, calculating) the time point and the section load (S406).
  • the supply section for each of the peripheral pressure (MTR) or substation at that time Calculate and generate (ie, calculate) all section loads based on the time point (S409).
  • the interval load of the missing section is generated (that is, calculated) (S410).
  • the AMI Advanced Metering Infrastructure
  • the accuracy of the section load calculation is more effective as it is expanded and distributed. Since the meter reading success rate and timely reception rate of the transformer measurement cannot be 100%, there is a limit to improving the accuracy of the section load calculation.
  • the present embodiment can calculate the section load more accurately by combining the distribution automation measurement information, customer metering information, and transformer measurement information as described above to calculate the section load.
  • this embodiment can be used for the selection of the optimum position of the automated switchgear considering the concentrated load, and can also be used for load prediction in relation to the power distribution system operation process, using the section load, the substation-MTR-CB-section By predicting the load, overload can be prevented in advance.
  • it can be used for power distribution planning tasks such as overload elimination and voltage drop elimination, and can be used for transmission substation planning work through substation linkage and utilization analysis.
  • the embodiment according to the present invention is effective in improving power quality and optimal operation of the distribution system through calculation of the section load with improved accuracy up to the distribution system automatic switchgear section and the lower section, such as voltage drop and overvoltage, loss, power factor, etc.
  • Helps to improve quality helps to reduce overload and accuracy of load transfer schemes, improves the accuracy of linkage and resilience calculations between substations, and reliability of system optimization (load leveling, loss minimization) simulations It can reflect the site situation when establishing fault recovery SOP (D / L, peripheral pressure transformer, substation recovery plan) operation procedure, improve reliability when establishing operation procedures for substation and distribution ceasefire, review protection coordination and correct accuracy Has the effect of improving.
  • SOP fault recovery SOP

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  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

L'invention concerne un système de calcul de charge de section, pour la distribution d'énergie, en fonction de la quantité d'utilisation d'énergie d'une infrastructure de comptage avancée (AMI). Le système selon l'invention comprend : une unité de correction de courant de section de commutateur automatisé destinée à éliminer les erreurs par subdivision en une deuxième unité temporelle particulière d'un courant, qui a été mesuré dans un commutateur automatisé, dans une première unité temporelle particulière, et à corriger un courant dans une section du commutateur automatisé par réalisation d'un calcul de flux d'énergie auquel sont appliquées les propriétés d'un système d'exploitation en boucle et d'une source d'alimentation répartie ; une unité de traitement de charge client de section inférieure, destinée à calculer la zone de charge par rapport à la quantité d'utilisation d'énergie d'AMI par chaque section inférieure, par substitution d'une valeur de puissance valide/invalide pour chaque section pour une charge de transformateur, qui est la somme d'une charge client haute tension et d'une charge client basse tension de la section inférieure, au moyen du courant corrigé de la section de commutateur automatisé ; une unité de calcul de flux d'énergie destinée à effectuer un calcul de flux d'énergie en fonction du résultat de calcul de zone de charge par rapport à la quantité d'utilisation d'énergie d'AMI de la section inférieure ; et une unité de génération de charge de section destinée à séparer les utilisations d'une charge, conformément à la norme de classification d'une charge de section, en fonction du résultat de calcul de flux d'énergie, et à générer une charge de section appropriée pour chaque utilisation.
PCT/KR2015/007736 2014-08-27 2015-07-24 Système de calcul de charge de section, pour la distribution d'énergie, en fonction de la quantité d'utilisation d'énergie d'infrastructure de comptage avancée Ceased WO2016032130A1 (fr)

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KR1020140112541A KR101625064B1 (ko) 2014-08-27 2014-08-27 Ami 전력 사용량 기반의 배전 구간부하 산출 시스템

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CN112564115A (zh) * 2020-12-18 2021-03-26 中国电建集团贵阳勘测设计研究院有限公司 一种适用于均衡控制的多端sop自适应下垂控制方法

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KR102485075B1 (ko) * 2020-12-03 2023-01-09 한국전력공사 배전계통 구간부하 추정을 이용한 자동화개폐기 이설 및 추가 여부 판단장치
KR102814134B1 (ko) * 2021-09-16 2025-05-30 한국전력공사 배전 계통에 구비된 태양광 설비들의 발전량 추정 방법 및 시스템
KR102537638B1 (ko) * 2022-11-18 2023-05-31 주식회사 크로커스 실계측된 설비 부하 전압에 기초한 전압 제어 장치

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CN112564115A (zh) * 2020-12-18 2021-03-26 中国电建集团贵阳勘测设计研究院有限公司 一种适用于均衡控制的多端sop自适应下垂控制方法

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